/* =========================================================================
 *  sundone.cn 私域道场 · 移动端优先样式
 *  设计原则：纯净 · 简洁 · 信任感 · 移动优先（Mobile First）
 * ========================================================================= */
:root {
  --bg: #f6f8fb;
  --surface: #ffffff;
  --ink: #16243a;
  --ink-soft: #5b6b82;
  --line: #e6ecf3;
  --brand: #0e7c86;          /* 深海蓝绿 · 信任 */
  --brand-deep: #0a5a62;
  --accent: #f5a524;         /* 落日金 · 天空之镜主题 */
  --accent-deep: #e08e0b;
  --ok: #1f9d6b;
  --shadow: 0 6px 24px rgba(14, 124, 134, .08);
  --radius: 16px;
  --maxw: 1080px;
}
* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  font-size: 16px;
}
img { max-width: 100%; display: block; }
a { color: var(--brand); text-decoration: none; }

/* ---------- 顶栏 ---------- */
.topbar {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.92);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.topbar .wrap {
  max-width: var(--maxw); margin: 0 auto; padding: 10px 16px;
  display: flex; align-items: center; justify-content: space-between;
}
.brand-mark { display: flex; align-items: center; gap: 10px; font-weight: 800; color: var(--brand-deep); }
.brand-mark .logo {
  width: 34px; height: 34px; border-radius: 9px;
  background: linear-gradient(135deg, var(--brand), var(--accent));
  display: grid; place-items: center; color: #fff; font-size: 18px;
}
.brand-mark small { display: block; font-weight: 500; color: var(--ink-soft); font-size: 11px; }
.nav { display: flex; gap: 4px; }
.nav a {
  padding: 8px 12px; border-radius: 10px; color: var(--ink-soft);
  font-size: 14px; font-weight: 600;
}
.nav a.active, .nav a:hover { color: var(--brand-deep); background: #eaf6f7; }
.nav-toggle { display: none; }

/* ---------- 容器 ---------- */
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 16px; }
.section { padding: 28px 0; }
.section h2 { font-size: 22px; margin: 0 0 6px; letter-spacing: .5px; }
.section .sub { color: var(--ink-soft); margin: 0 0 18px; font-size: 14px; }

/* ---------- Hero ---------- */
.hero {
  background: radial-gradient(1200px 400px at 80% -10%, rgba(245,165,36,.18), transparent),
              linear-gradient(160deg, #0e7c86, #0a5a62);
  color: #fff; padding: 56px 0 48px;
}
.hero .wrap { display: grid; gap: 18px; }
.hero h1 { font-size: 30px; margin: 0; line-height: 1.25; }
.hero .slogan { font-size: 16px; opacity: .92; margin: 0; }
.hero .badges { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 4px; }
.hero .badges span {
  background: rgba(255,255,255,.16); border: 1px solid rgba(255,255,255,.28);
  padding: 6px 12px; border-radius: 999px; font-size: 13px;
}
.hero .cta {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--accent); color: #2a1c00; font-weight: 800;
  padding: 14px 22px; border-radius: 12px; font-size: 16px;
  box-shadow: 0 10px 30px rgba(245,165,36,.35);
}
.hero .cta:hover { background: var(--accent-deep); color: #fff; }

/* ---------- 信任条 ---------- */
.trust {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 16px; margin: -28px 16px 0; position: relative; z-index: 2; box-shadow: var(--shadow);
  max-width: var(--maxw); margin-left: auto; margin-right: auto;
}
.trust .item { text-align: center; }
.trust .num { font-size: 22px; font-weight: 800; color: var(--brand-deep); }
.trust .lab { font-size: 12px; color: var(--ink-soft); }

/* ---------- 分类筛选 ---------- */
.filters { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; }
.filters button {
  border: 1px solid var(--line); background: var(--surface); color: var(--ink-soft);
  padding: 8px 14px; border-radius: 999px; font-size: 14px; font-weight: 600; cursor: pointer;
}
.filters button.active { background: var(--brand); color: #fff; border-color: var(--brand); }

/* ---------- 产品卡 ---------- */
.grid { display: grid; grid-template-columns: 1fr; gap: 16px; }
.card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; box-shadow: var(--shadow); display: flex; flex-direction: column;
}
.card .cover {
  height: 150px; display: grid; place-items: center; color: #fff; font-size: 40px;
  background: linear-gradient(135deg, var(--brand), var(--brand-deep));
  position: relative;
}
.card .cover .badge {
  position: absolute; top: 10px; left: 10px; background: var(--accent); color: #2a1c00;
  font-size: 12px; font-weight: 800; padding: 4px 10px; border-radius: 999px;
}
.card .cover .slot { position: absolute; top: 10px; right: 10px; background: rgba(0,0,0,.28); color:#fff; font-size: 11px; padding: 3px 8px; border-radius: 999px; }
.card .body { padding: 14px 16px 16px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.card h3 { margin: 0; font-size: 18px; }
.card .cat { font-size: 12px; color: var(--brand); font-weight: 700; }
.card .summary { color: var(--ink-soft); font-size: 14px; margin: 0; flex: 1; }
.card .tags { display: flex; flex-wrap: wrap; gap: 6px; }
.card .tags span { font-size: 11px; color: var(--ink-soft); background: #eef3f8; padding: 3px 8px; border-radius: 6px; }
.card .links { display: flex; flex-direction: column; gap: 8px; margin-top: 6px; }
.btn-jump {
  display: flex; align-items: center; justify-content: center; gap: 8px;
  background: var(--brand); color: #fff; font-weight: 700; padding: 11px 14px;
  border-radius: 11px; font-size: 14px; border: none; cursor: pointer; text-align: center;
}
.btn-jump.flgy { background: linear-gradient(135deg, #ff6a00, #ff5000); }
.btn-jump:hover { filter: brightness(1.05); }
.btn-soon {
  display: flex; align-items: center; justify-content: center; gap: 6px;
  background: #f1f4f8; color: var(--ink-soft); font-weight: 600; padding: 9px 14px;
  border-radius: 11px; font-size: 13px; border: 1px dashed var(--line); cursor: not-allowed;
}

/* ---------- 关于 / 联系 ---------- */
.panel {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 22px; box-shadow: var(--shadow);
}
.panel h3 { margin-top: 0; color: var(--brand-deep); }
.contact-list { display: grid; gap: 12px; }
.contact-list .row { display: flex; gap: 12px; align-items: flex-start; }
.contact-list .ic { font-size: 22px; }
.contact-list .k { font-weight: 700; }
.contact-list .v { color: var(--ink-soft); font-size: 14px; }
.note {
  background: #fff7e8; border: 1px solid #ffe2a8; color: #8a5a00;
  padding: 12px 14px; border-radius: 12px; font-size: 13px; margin-top: 14px;
}

/* ---------- 页脚 ---------- */
.footer { background: #0a1726; color: #c7d2e0; padding: 28px 0; margin-top: 32px; font-size: 13px; }
.footer .wrap { display: grid; gap: 8px; }
.footer a { color: #6fd3da; }
.footer .copy { color: #6b7a90; }

/* ---------- 响应式：平板及以上 ---------- */
@media (min-width: 640px) {
  .grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 960px) {
  .grid { grid-template-columns: repeat(3, 1fr); }
  .hero h1 { font-size: 40px; }
  .trust { grid-template-columns: repeat(3, 1fr); }
}

/* ---------- 小屏导航折叠 ---------- */
@media (max-width: 560px) {
  .nav { position: fixed; left: 0; right: 0; bottom: 0; top: auto;
    background: rgba(255,255,255,.97); border-top: 1px solid var(--line);
    display: flex; justify-content: space-around; padding: 6px 0; z-index: 60; }
  .nav a { flex: 1; text-align: center; font-size: 12px; padding: 6px 4px; }
  .hero { padding-bottom: 64px; }
  body { padding-bottom: 56px; }
}